seo - Using DNS to Redirect Several Domains into One Single Content. Disaster? -

When I search on Google for our web site, I always looked at three sites with the same content, I always thought we were only one The site was using www.foo.com, but it has come to our attention that www.foo.net and www.foo.info are with www.foo.com with the same content.

I know that it is extremely bad to have the same content under different URLs and it seems that we have been using three domains for years and I have not seen the punitive blunt so far.

What's going on? Is Google using a new policy like this blog lawyer? Http: //www.seodenver.com/duplicate-content-over-multiple-domains-seo-issues/

Or is it okay to use DNS redirects? What should I do?

Thanks

If you are managing websites through Google Webmaster Tools, then this It is possible to specify "primary domain".

However, the search engine's world does not stop with Google, so your best bet is to send a 301 redirect to your primary domain, for example.

  www.foo.net should redirect 301 to www.foo.com www.foo.net/bar should redirect to www.foo.com/bar at 301  

And so on.

It will ensure that www.foo.com gets a full score instead of one third of the probable score, which you can get for link-back (internal and external).